/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package classes;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;;
import pojo.Customer;
import pojo.Customer;
import pojo.Customer;
import pojo.Customer;

/**
 *
 * @author Hagar
 */
public class MyWallet extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
    Session session = sessionFactory.openSession();

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here. You may use following sample code. */
          
            boolean result=false;
            String s = request.getParameter("charge");
            Pattern pattern1 = Pattern.compile("[0-9]+\\.?[0-9]*");
            Matcher matcher1 = pattern1.matcher(s);
            result=matcher1.matches();
            if(s.isEmpty()||!result)
            {
                response.sendRedirect("MyWallet.jsp?c=Please enter valid charging value");
                
            }
            else
            {
            Customer c = (Customer)request.getSession(false).getAttribute("user");
            
            c.setCredit(c.getCredit() + Float.parseFloat(s));
            request.getSession(false).setAttribute("user", c);
            session.beginTransaction();
          session.merge(c);
            //Query query = session.createQuery("update Customer set credit= :amount"+ "where email= :mail");
            //query.setParameter("amount", c.getCredit());
            //query.setParameter("mail", c.getEmail());
            //int r = query.executeUpdate();
            session.getTransaction().commit();
            response.sendRedirect("balance.jsp");
            }

        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
